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2 | #if !defined(BOOST_PP_IS_ITERATING) |
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3 | |
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4 | ///// header body |
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5 | |
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6 | #ifndef BOOST_MPL_ARG_HPP_INCLUDED |
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7 | #define BOOST_MPL_ARG_HPP_INCLUDED |
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8 | |
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9 | // Copyright Peter Dimov 2001-2002 |
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10 | // Copyright Aleksey Gurtovoy 2001-2004 |
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11 | // |
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12 | // Distributed under the Boost Software License, Version 1.0. |
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13 | // (See accompanying file LICENSE_1_0.txt or copy at |
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14 | // http://www.boost.org/LICENSE_1_0.txt) |
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15 | // |
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16 | // See http://www.boost.org/libs/mpl for documentation. |
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17 | |
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18 | // $Id: arg.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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19 | // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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20 | // $Revision: 49267 $ |
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21 | |
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22 | #if !defined(BOOST_MPL_PREPROCESSING_MODE) |
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23 | # include <boost/mpl/arg_fwd.hpp> |
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24 | # include <boost/mpl/aux_/na.hpp> |
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25 | # include <boost/mpl/aux_/na_assert.hpp> |
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26 | # include <boost/mpl/aux_/arity_spec.hpp> |
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27 | # include <boost/mpl/aux_/arg_typedef.hpp> |
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28 | #endif |
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29 | |
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30 | #include <boost/mpl/aux_/config/static_constant.hpp> |
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31 | #include <boost/mpl/aux_/config/use_preprocessed.hpp> |
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32 | |
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33 | #if !defined(BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS) \ |
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34 | && !defined(BOOST_MPL_PREPROCESSING_MODE) |
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35 | |
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36 | # define BOOST_MPL_PREPROCESSED_HEADER arg.hpp |
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37 | # include <boost/mpl/aux_/include_preprocessed.hpp> |
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38 | |
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39 | #else |
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40 | |
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41 | # include <boost/mpl/limits/arity.hpp> |
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42 | # include <boost/mpl/aux_/preprocessor/default_params.hpp> |
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43 | # include <boost/mpl/aux_/preprocessor/params.hpp> |
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44 | # include <boost/mpl/aux_/config/lambda.hpp> |
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45 | # include <boost/mpl/aux_/config/dtp.hpp> |
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46 | # include <boost/mpl/aux_/nttp_decl.hpp> |
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47 | |
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48 | # include <boost/preprocessor/iterate.hpp> |
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49 | # include <boost/preprocessor/inc.hpp> |
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50 | # include <boost/preprocessor/cat.hpp> |
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51 | |
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52 | BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_OPEN |
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53 | |
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54 | // local macro, #undef-ined at the end of the header |
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55 | #if !defined(BOOST_MPL_CFG_NO_DEFAULT_PARAMETERS_IN_NESTED_TEMPLATES) |
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56 | # define AUX778076_ARG_N_DEFAULT_PARAMS(param,value) \ |
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57 | BOOST_MPL_PP_DEFAULT_PARAMS( \ |
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58 | BOOST_MPL_LIMIT_METAFUNCTION_ARITY \ |
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59 | , param \ |
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60 | , value \ |
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61 | ) \ |
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62 | /**/ |
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63 | #else |
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64 | # define AUX778076_ARG_N_DEFAULT_PARAMS(param,value) \ |
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65 | BOOST_MPL_PP_PARAMS( \ |
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66 | BOOST_MPL_LIMIT_METAFUNCTION_ARITY \ |
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67 | , param \ |
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68 | ) \ |
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69 | /**/ |
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70 | #endif |
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71 | |
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72 | #define BOOST_PP_ITERATION_PARAMS_1 \ |
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73 | (3,(0, BOOST_MPL_LIMIT_METAFUNCTION_ARITY, <boost/mpl/arg.hpp>)) |
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74 | #include BOOST_PP_ITERATE() |
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75 | |
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76 | |
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77 | # undef AUX778076_ARG_N_DEFAULT_PARAMS |
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78 | |
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79 | BOOST_MPL_AUX_NONTYPE_ARITY_SPEC(1,int,arg) |
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80 | |
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81 | BOOST_MPL_AUX_ADL_BARRIER_NAMESPACE_CLOSE |
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82 | |
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83 | #endif // BOOST_MPL_CFG_NO_PREPROCESSED_HEADERS |
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84 | #endif // BOOST_MPL_ARG_HPP_INCLUDED |
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85 | |
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86 | ///// iteration |
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87 | |
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88 | #else |
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89 | #define i_ BOOST_PP_FRAME_ITERATION(1) |
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90 | |
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91 | #if i_ > 0 |
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92 | |
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93 | template<> struct arg<i_> |
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94 | { |
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95 | BOOST_STATIC_CONSTANT(int, value = i_); |
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96 | typedef arg<BOOST_PP_INC(i_)> next; |
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97 | BOOST_MPL_AUX_ARG_TYPEDEF(na, tag) |
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98 | BOOST_MPL_AUX_ARG_TYPEDEF(na, type) |
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99 | |
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100 | template< |
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101 | AUX778076_ARG_N_DEFAULT_PARAMS(typename U, na) |
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102 | > |
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103 | struct apply |
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104 | { |
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105 | typedef BOOST_PP_CAT(U,i_) type; |
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106 | BOOST_MPL_AUX_ASSERT_NOT_NA(type); |
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107 | }; |
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108 | }; |
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109 | |
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110 | #else |
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111 | |
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112 | template<> struct arg<-1> |
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113 | { |
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114 | BOOST_STATIC_CONSTANT(int, value = -1); |
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115 | BOOST_MPL_AUX_ARG_TYPEDEF(na, tag) |
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116 | BOOST_MPL_AUX_ARG_TYPEDEF(na, type) |
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117 | |
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118 | template< |
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119 | AUX778076_ARG_N_DEFAULT_PARAMS(typename U, na) |
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120 | > |
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121 | struct apply |
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122 | { |
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123 | typedef U1 type; |
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124 | BOOST_MPL_AUX_ASSERT_NOT_NA(type); |
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125 | }; |
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126 | }; |
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127 | |
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128 | #endif // i_ > 0 |
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129 | |
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130 | #undef i_ |
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131 | #endif // BOOST_PP_IS_ITERATING |
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